Machine for cutting articles of curvilinear outline from sheet material.



No. 654,837. Patented luly 3|, I900.

R. c. MONAHAN. MACHINE FOB CUTTING ARTICLES 0F CURYILINEAR OUTLINE FROM SHEET MATERIAL.

(Application filed Apr, 5, 1900.) (No Model.) 6 Shggts-Sheet l.

I i 51 1- WITNEEEEE- NVENTEIPY PVwLcwd \mnalmu THE nonms warns on, mmuumou wAsmNuToN. u. c

Patented IuIy 3|, I900. v R. C. MONAHAN. MACHINE FOR CUTTING ARTICLES 0F CURVILINEAR OUTLINE FROM SHEET MATERIAL (Application filed Apr. 5, 1900.)

6 Sheets-Sheet 2 (No Model.)

THE ncnms PETERS co. mom-umov. wnsnmo'rox, u 04 No. 654,837. Patented July 3 I900.

n. c. MONAHANI MACHINE FOR CUTTING ARTICLES 0F CUBVILINEAR OUTLINE FROM SHEET MATERIAL.

(Application filed Apr. 5, 1900.) V

6 Sheets-Sheet 3,

(No Model.)

Racket. rd: 1011011011 [17 IuS/kkmv |1e)/ No. 654,837. Patented luly 3|, I900. R. C. MONAHAN.

MACHINE FOB CUTTING ARTICLES 0F CURVILINEAR OUTLINE FROM SHEET MATERIAL.

(Application filed Apr. 5, 1900.)

1 (No Model.) 6 Sheets$heel 4.

IIIIIIIII IIIIIIIIIIIIIII IIIIIIII" Patented luly 3|, I900.

n. c. MONAHAN. I TERI MACHINE FOR CUTTING ABITG'LES 0F GUBVlLmEAR OUTLINE FROM SHEET MA (Application filed; Apr. 6, 1900.)

6 Shaets-Shet 5.

(No Model):

THE uonms PETERS co. wucvoumou WASHINGTON. u c

'. Patented m 3|, I900.

I n. c. MONAHAN.

MACHINE FOR CUTTING ARTICLES 0F CURVILINEAR OUTLINE FROM SHEET MATERIAL.

(Application filed Apr. 5, 1900. (No Model.) e Sheets-Sheet 6.

U TE TA ES PATE Orifice.

RICHARD MONAHAN, on EVERE TT, MASSACHUSETTS, residues To ROBERT D. EVANS AND JOHN s, LOCKWOOD, on 'BosToN, MASSA- oHUsETTs.

MACHINE FOB CUTTING ARTICLES 0F CURVILINEAR OUTLlNE FROM SHEET MATERIAL.

SPECIFICATION forming part of Letters Patent N 0. 654,837, dated JuIy 31, 1900.

Application filed April 5, 1900.

To all whom it may coneerm Be it knownthat LRICHARD C. MONAHAN, a citizen of the United States, residing at Everett, in the county of Middlesex and State of Massachusetts, have invented new and useful Improvements in Machines for Cutting Arti cles of Curvilinear Outline from Sheet Mate rial, of which the following is a specification.

This invention relates particularly to the clamping-pattern in accordance with which the material is to be cut when used in a machinelike that described and shown in United States Letters Patent No. 652,159, dated June 19, 1900, for improvements in machines for cutting boot and shoe soles and other articles of curvilinear outline from sheet material, in which a pattern of the shape of the article desired is employed to clamp the material upon a support and also to guide the knife which cuts the article.

My improvement consists in an adjustable arm or auxiliary guide organized with a guide; plate having a fixed position in relation to the pattern in the machine, and such adj ustable device is pivoted in suitable, position to guide the trimming-knife beyond the mar ginal outline of the pattern both at the time when the said knife approaches the pattern at the beginning of its cutting operation and when it leaves the pattern at the end of the cutting'operation and in a continuous path" which begins and ends at theapex of a salient angle in the peripheral outline of said pattern. g g

The object of this invention is to produce a machine for cutting articles of curvilinear outline which have a salient angle in their peripheral outline, and for illustrationl Will describe the improvement in connection with a tan-sole for a boot or shoe cut from sheet mat erial, such as vulcanized india-rubber.

Referring to the drawings, Figure 1 is a front elevationof a machine-organized with cams and levers and connecting mechanism suitable for cutting articles of curvilinear outline, to which I have applied my present improvements. Fig.2 is an enlarged front elevation, partly in section, of the swinging frame for carrying the stocksupport and clamping-pattern, together with the mechanism for operating said parts and a portion of the frame of the machine and of the mechanstock-support or cutting-table.

SerialNo. 11,776. (No modeld' ism for stripping the sole and scrap from the A portion of the mechanism at the righthand of the figure is broken away to save space in the drawing. Fig. 3 is a detail section, line 3 3, Fig. 2, looking toward the right in said figure. Fig. 4 is an enlarged plan view, partly in section, of the swinging frame for carrying the stocksupport and clamping-pattern, the flexible arm which carries the trimming-knife holder, mechanism for operating said flexible arm,

and a portion of the mechanism for stripping the sole and scrap from the stock-support. Fig. 5 is a detail section taken on the line 5 5, Fig, 4. Fig. 6 is a front elevation, partly in section, of the trimming-knife and holder,

their supporting flexible arm, and the mechanism for pulling down on said flexible arm. A portion of the frame of the machine is shown in dotted lines. Fig. 6 is a side elevation of the cam for pulling down said flexible arm, shown in Fig. 6 in edge 'view. Figs. 7, 8,

and 9' are plan views illustrating difierent positions assumed by the clamping-pattern, ad-

justable auxiliary guide-plate, and trimmingknife holder during the operation of cutting a tap-sole. Fig. 10 is a vertical longitudinal section on line 10 10, Fig. 7. Fig. 11 is an enlarged side elevation of the clamping-pattern holder. Fig. 12 is a plan of said patternholder viewed from beneath. Fig. 13 is a plan view, and Fig. 14 a side elevation, of the clamping-pattern and fixed guide-plate. Fig. 15 is a side elevation, partly in section, and Fig.16 a plan,'of the adjustable arm or auxiliary guide-plate and its pivotal stud.

Similar letters refer to same parts of the machine throughout the several views of the drawings.

In the drawings, 1) is a clamping-pattern: having the outline of a tap-sole, and it is made up of three parts rigidly fastened together-viz., a sheet-metal pattern P with beveled edges P on the under side of said clampingpattern, a guide-plate P and an intermediate block P preferably of light tough material, such as wood, and having an angular groove 19 in its edge to accommodate .the trimming-knife 71: and its holder k The guide-plate P serves as a guide for the antifriction-rolls it of the trimming-knife holder 7c". The edge of said guide-plate P3 ting an article having a salient angle, as P tern p is'changed; as hereinafter described.

is parallel to that of the sheet-metal pattern P, and both terminate at one end in a salient angle'at the apex P d, with which it is connected, and whichlever d ismoved upand down on its pivot. 01

by means ofa cam-roll d, which runs'in the cam-groove b in the wheel b and the said shaft g, with'the clamping-pattern p and the stock-support s, are rotated through the gears '6? 41 d 1', connected by the shaft i and the gears h 71 h h, connected. by the shaft h Shown on Fig. 2.)

theirperipheral contour, and the guide-plate P upon the pattern has served as a bearing for both of the antifriction-rollers 76 during the complete rotation of the pattern; but' incut;

by rotating the pattern while holding the knife against it it is evident that as soon as the knife arrives at the point P the rollsJc could not both bear upon-the guide-plate P and therefore the knife 1623 would not beproperlyguided when passing said point. T0};

overcome this. difficulty, I provide an adj ustable auxiliary'guide-plate p pivoted upon the shouldered screw 9? to the holder 13. This auxiliary guide-plate 19 is slotted at p to receive a stop-pin p and the slot is formed in a curve described from p as a cen-' ter. It will be noted that the auxiliary guideplate 19 lies in the same horizontal plane as the guide-plate P and thus forms a,continuation of the guiding-surface for the, rolls 7& when the trimming-knife is approachingor leaving said guide-plate, as hereinafter described. The trimming-knife holder la is attached to a flexible arm is, which is swung "toward; and from the clamping-pattern by means of the cam-roll k on thelever la ,v which cam-roll bears against a. cam and the relative time at which the trimming-knife k is allowed to-approach the clamping-pat- The mechanism for pullingthe flexible arm 70 down, and thrustingthe trimming-knife through'thestock at the propertime is illustrated in Figs. (land 6? and consists of a cam a whichis provided with an adjustablecamplate 1 which is slotted at a 'and secured;

to the cam-blank a by a nut and, screw 0},

thus making it possible tovary the lengthof the cam-surface and by this means vary the time] at; which andduring which the arm is shall be pulleddown, as is desired, in the op-r erationofthe machine.

The operationof the mac'hineas;awholeis;

The clamping-pattern p is clamped to a holder 1) by a cam-pimp? as follows: The blank having beensevered frfornithe mai'fi sheet ofjmat'erial by the'shears ff","Fig; 1','an'd clamped to the stock-support .s..rbynthe clamping-pattern p, the swinging frame H H, is moved ,aw'ay andthe stock- ;supportisand ipattem pjare, rotated by. the m echanism hereinbefore specified; Instead "of allowing the"trimmingekn-ifemlfii to meet the pattern asit leaves theshearsff at the side of the sole ofthe shoe near the shank por on thereof. and at. the. time when said pattern :is beginning to rotate, as in prior .machines,.I. hold the trimming-knife out by the cam' k l until the pattern p and stocks'uppor't's'have been given about a quarterrotation, as shown in Figs.- 7 and 8, when the cam 10 allows the trimming knifeto approach the pattern 'p,as shown in Fig.'.7,"and as it approaches, near the guide:rolls' k strike the auxiliary guide-plate p on they side as, as

Machines of this character heretofore in use have been adapted for cutting from the sheet material articles having no salient angle in shown in Fig. 8.] Atthis timethe knife 10 is pulled downwardlyjandfthrust thronghthe stock by the. action of. the cam a upon the "lever k iand its connecting mechanism. The trolls 70 then follow. the auxiliary guide-plate ip" asthe pattern is given'a further rotation until they pass onto the guide-plate P at one side ofgtheapex of the angle'Pfl" While 'thepatternis rotated to the position shown in Fig. 9 the rolls k follow the guide-plate and guide the. trimming-knife in 'a path .;parallel to and very close to the edge P "of Itheclamping-pattern. Finally, the leading one of, the guide-rolls is, strikes the auxiliary iguidefplate pfi upon the side y .and automatic- ,ally throws said plate around upon its pivot 19 until one end of the slot 19 strikes the stoprpin-p l and arrests the plate in the position shown in Fig. 9. 'It will be seen that when theauxiliary guide-plate p is thrown into the, position shown in Fig. 9 by the advancingguide-r01ls the edge y of said. auxiliary guide-plate will forma continuation of .theedge of' the guide-plateiPiand the trimming-knife k wi-ll be guided in a *pathcontinuous with the edgeof that pattern ipand willleave said pattern in'a path which intersects the path in which the knife moved as it approached thepattern at the apex P of the salient angle thereof. This is accomplished by making the length of the slot 10 clamping-pattern pand stock-supports back to, theshears ff" to receive another blank cut from the material, and the series of motions hereinbefore described are repeated. The completed-tap-sole and scrap are removed fromthesupportss'during the return move- 7 nient of the arm Hby'the clearing fin-gers 1 which are moved down into contact with the sole by the action of the cam 29* upon the arml on the end of shaft l". The auxiliary guide-plate p is turned upon its pivot 19? from the position shown in Fig. 9 to that shown in Figs. 7 and 8 by a plate Z made fast to the rock-shaftl,against which platethe edge w of the auxiliary guide-platep strikes, Fig. 2, when the swinging frame H carries the clamping-pattern p and the support 8 back to the shears f f.

In order to adapt the machine herein described to cut outsoles as well as taps with very little less of time in making the necessary changes therein, I provide upon the lever 70 a cam-roll 70 fastened thereto by a shouldered stud 70 and nut 10 When it is desired to cut tap-soles, the cam-roll 70 and stud 7c are fastened by the nut 70 to the upper side of the lever k as shown in Fig. 5, and the cam-roll 70 will then run against the face of the cam 70 Fig 6. To change the machine so that it will be adapted to cut full outsoles,

the clamping-pattern shown in the drawings hereof is changed for one which has the full outline of a shoe-sole. The cam-roll is and stud 70. are reversed, and the said cam-roll is thus brought below the lever 70 and will bear against the face of the cam 19 which is formed so as to hold the knife-carrier away from the pattern only during the time that the stock-support is moving to and from the blank-cuttingknives. In addition to these changes the cam-plate a is adjusted in relation to the cam a so that the time during which the cam holds down the trimming-knife will correspond to the time which it occupies in passing around the circumference of the periphery of the pattern of a complete sole. It will thus be seen that with these few changes the same machine can be adapted to out either outsoles or tap-soles.

I have shown the auxiliary guide-plate p pivoted to the holder 19, so that one auxiliary guide-plate may be used for different sizes and styles of patterns; but it is evident that said auxiliary guide-plate may be pivoted to the clamping-pattern or to any portion of the machine bearing a fixed relation to said clamping-pattern without departing from the spirit of my invention.

I claim- 1. A pattern according to which sheet ma terial is to be cut,'the edge of which pattern terminates at one extremity in a salient angle, and is provided with an automaticallyadjustable guide for the trimming-knife, which guide projects beyond theedge of the patternover said salient angle, and is capa ble of a swinging movement across said angle through an are equal to the width of said guide measured at the apex of said angle.

2. A pattern of curved outline according to which sheet material is to be on t, the curves of the edge of which pattern are interrupted by a salient angle, combined with an arm to guide the trimming-knife beyond the edge of the pattern and which is pivoted over said angle and is adapted to swing upon its pivot across said angle a distance sufficient to place the respective edges of the guiding-arm over the apex of the salient angle at the extreme limits of the swinging movement of said arm.

3. In a machine for cutting articles of our vilinear outline from sheet materialfa clamping-pattern of the same outline as the article desired, a guide fixed with relation to said clamping-pattern to guide the cutting-knife around its periphery, and an auxiliary guide pivotally adjustable in a limited are over the edge of the pattern to guide the knife beyond its edge.

In testimony whereof I have hereunto set my hand in presence of two subscribing wit nesses.

RICHARD C. MONAHAN.

Witnesses:

CHARLES S. GOODING, SYDNEY E. TAFT. 

